\documentclass[12pt]{article}
\usepackage[utf8]{inputenc}
\usepackage{fourier} 
\usepackage{array}
\usepackage{makecell}

\renewcommand\theadalign{cb}
\renewcommand\theadfont{\bfseries}
\renewcommand\theadgape{\Gape[4pt]}
\renewcommand\cellgape{\Gape[4pt]}

\begin{document}

\begin{center}
	\begin{tabular}{ | c | c | c |}
		\hline
		\thead{A Head} & \thead{A Second       \\ Head} & \thead{A Third \\ Head} \\
		\hline
		Some text      & \makecell{Some really \\ longer text}  & Text text text  \\
		\hline
	\end{tabular}
\end{center}

\end{document}
